Global Patent Index - EP 0818805 A3

EP 0818805 A3 19980325 - Discharge lamp ARC tube and method of producing the same

Title (en)

Discharge lamp ARC tube and method of producing the same

Title (de)

Bogenentladungslampenröhre und Herstellungsverfahren derselben

Title (fr)

Tube de lampe à décharge à arc et son procédé de fabrication

Publication

EP 0818805 A3 19980325 (EN)

Application

EP 97111776 A 19970710

Priority

JP 18295896 A 19960712

Abstract (en)

[origin: EP0818805A2] A discharge lamp arc tube comprises: a glass tube having a linear extension portion, a closed glass bulb, and pinch seal portions at both sides of the closed glass bulb; and electrode assemblies, each having an electrode rod, a molybdenum foil and a lead wire integrally series-connected, the molybdenum foil having oxide films thereon, wherein the electrode assemblies are inserted into the glass tube and pinch-sealed such that the molybdenum foils are positioned at the respective pinch seal portions. <IMAGE>

IPC 1-7

H01J 61/36; H01J 9/32

IPC 8 full level

H01J 9/28 (2006.01); H01J 9/00 (2006.01); H01J 9/32 (2006.01); H01J 61/36 (2006.01)

CPC (source: EP US)

H01J 9/326 (2013.01 - EP US); H01J 61/368 (2013.01 - EP US); H01J 61/34 (2013.01 - EP US)

Citation (search report)

  • [XA] EP 0309749 A1 19890405 - GEN ELECTRIC [US]
  • [XA] GB 1207221 A 19700930 - GEN ELECTRIC & ENGLISH ELECT [GB]
  • [XA] US 3211826 A 19651012 - HOLCOMB RICHARD H, et al
  • [XA] EP 0492189 A2 19920701 - USHIO ELECTRIC INC [JP]
  • [XA] DATABASE WPI Section Ch Derwent World Patents Index; Class L03, AN 72-53267T, XP002053388
  • [A] DATABASE WPI Section Ch Derwent World Patents Index; Class L03, AN 72-80184T, XP002053389
  • [A] DATABASE WPI Section Ch Week 8611, Derwent World Patents Index; Class L03, AN 86-074635, XP002053390
  • [A] PATENT ABSTRACTS OF JAPAN vol. 010, no. 175 (E - 413) 20 June 1986 (1986-06-20)

Designated contracting state (EPC)

AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

DOCDB simple family (publication)

EP 0818805 A2 19980114; EP 0818805 A3 19980325; EP 0818805 B1 20020529; DE 69712834 D1 20020704; DE 69712834 T2 20020912; JP H1027574 A 19980127; US 5877590 A 19990302; US 5993279 A 19991130

DOCDB simple family (application)

EP 97111776 A 19970710; DE 69712834 T 19970710; JP 18295896 A 19960712; US 89134596 A 19960712; US 9289398 A 19980608